Adjust FreeType warning to avoid a Clang LLP64 build failure

third_party/freetype/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/chromecast_build.gni")
 
 config("freetype_config") {
   include_dirs = [
     "include",
     "src/include",
   ]
 }
 
 config("freetype-warnings") {
   cflags = []
 
   if (is_clang) {
     # The reduction of FreeType files to a minimum triggers -Wunused-function
     # warnings in ftbase.c
-    cflags += [ "-Wno-unused-function" ]
+
+    # "-Wno-int-to-pointer-cast" tracked by
+    # https://savannah.nongnu.org/bugs/index.php?50560,
+    # TODO(drott): Remove this once we roll past 7aeee3c50f2656b65f.
+    cflags += [
+      "-Wno-unused-function",
+      "-Wno-int-to-pointer-cast",
+    ]
   }
 }
 
 component("freetype") {
   if (is_linux) {
     output_name = "freetype"
     output_extension = "so.6"
   }
 
   sources = [
@@ skipping 52 matching lines @@
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [ "//build/config/compiler:no_chromium_code" ]
 
   configs += [ ":freetype-warnings" ]
 
   deps = [
     "//third_party/libpng",
     "//third_party/zlib",
   ]
 }